| publication name | Cyclic Loading of Underground Cables Including the Variations of Backfill Soil Thermal Resistivity and Specific Heat with Temperature Variation |
|---|---|
| Authors | Ossama E. Gouda; Gomaa F. A. Osman; W. A. A. Salem; and Shawky H. Arafa |
| year | 2018 |
| keywords | Power cables; thermal analysis; thermal resistivity; moisture content; specific heat; dry band. |
| journal | IEEE Transactions on Power Delivery |
| volume | Not Available |
| issue | Not Available |
| pages | Not Available |
| publisher | Not Available |
| Local/International | International |
| Paper Link | https://ieeexplore.ieee.org/document/8388211/ |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
One aim of this paper is to calculate the temperature distribution of the cable conductor and the soil surrounding the cable under cyclic loading conditions taking into account the formation of a drying zone in the backfill material. The thermal model of the underground cable is considered by using the IEC 60853-2 method, including the effects of the variations in temperature on the thermal resistivity and specific heat of the soil. The results are compared with IEC 60853-2 and thermoelectric equivalent method (TEE) calculations. The study is done on eight sandy soil types as backfill materials and calculations are carried out by using a 33 kV cable. The results indicate that the modifications done on the IEC 60853-2 method are required to improve its capability to simulate the field conditions during load cycling of power cables.